# sthan.io, free: IP company lookup API

> Look up any IPv4 or IPv6 address. Returns [...] network (ASN, ISP, organisation), mobile/proxy/hosting flags, reverse DNS and a confidence score.

sthan.io's Free plan for the IP company lookup API costs $0.00 per 1,000 IP addresses. sthan.io's docs list 3 of the 10 fields on our checklist: Owner's name, ASN, Hosting.
We haven't run sthan.io through [our IP company lookup API benchmark](https://datacircle.dev/best-ip-company-lookup-api.txt) yet.
This plan is free. We rank 398 plans for IP company lookup APIs by price. Half the plans cost $0.112 per 1,000 IP addresses or less. [See the best free IP company lookup API plan.](https://datacircle.dev/best-ip-company-lookup-api.txt)
[IPHunter's €99.99 monthly plan](https://datacircle.dev/ip-company-lookup-apis/iphunter/99-99-monthly/llms.txt) is the cheapest paid plan per 1,000 IP addresses. IPHunter's €99.99 monthly plan covers up to 11,520,000 IP addresses a day.
[FreeIPAPI's €9.90 monthly plan (/api/bulk/json)](https://datacircle.dev/ip-company-lookup-apis/freeipapi/9-90-monthly-unlimited-post-api-bulk-json/llms.txt) covers any number of IP addresses. FreeIPAPI's €9.90 monthly plan costs less up front than IPHunter's €99.99 monthly plan.
[DNSlytics](https://datacircle.dev/ip-company-lookup-apis/dnslytics/free/llms.txt), [ipwhois.io](https://datacircle.dev/ip-company-lookup-apis/ipwhois-io/free/llms.txt) and [IPBot](https://datacircle.dev/ip-company-lookup-apis/ipbot/free-anonymous-get-v1-ip-ip/llms.txt) are the best IP company lookup API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/ip-company-lookup-apis/sthan-io/free
- [IP company lookup API: the 15 best providers compared](https://datacircle.dev/best-ip-company-lookup-api.txt)
- Get it: https://sthan.io/pricing/global?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Request: `GET https://api.sthan.io/IpGeolocation/{ip}`
- API key: with the plan, on https://sthan.io/pricing/global?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- Its API docs: https://sthan.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing#ipgeo
- Sold by: sthan.io (https://sthan.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 30%
- Owner's name: ✓
- ASN: ✓
- Hosting: ✓

## Price

- $ per 1,000 IP addresses: $0.00
- Per: call
- Billing: free

## Charges

- Also pays for: nothing else

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Look up any IPv4 or IPv6 address. Returns [...] network (ASN, ISP, organisation), mobile/proxy/hosting flags, reverse DNS and a confidence score.

## Data

- Keep data: no limit
- Use data: You may build the Services into your own products, including products you sell to your customers, and you may resell access to the Services. When you use the Services, you agree not to: Use them for anything unlawful, or to process data you do not have the right to process, Use the Services to build a copy of our data, for example by querying them in bulk to create your own address or location database or dataset, Try to get around rate limits, quotas, or plan restrictions, including by using several accounts or keys to do so, Attack, overload, probe for vulnerabilities in, or disrupt the Services or the systems behind them, Reverse engineer the Services, except where the law does not allow this restriction, Misrepresent your identity or your relationship with sthan.io. If you resell or embed the Services, you are responsible for your customers' use of them under these Terms.

## Plan

- Pay: $0
- You get: 50,000 requests a month
- Enough for: 50,000 calls a month

## Rate limit

- Per day: 5,000
- Per second: 33.33
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: ip
- Method: GET
- Path: /IpGeolocation/{ip}

## About the plan

- Plan: Free
- Who can get it: anyone at least 18 years old and able to enter into a binding contract, one free account per person or organization

## The 8 fields the plan's answer can hold

IP address, organization, ISP, ASN, AS name, reverse DNS, mobile flag, hosting flag

## sthan.io's plans (25)

- [sthan.io, free](https://datacircle.dev/ip-company-lookup-apis/sthan-io/free/llms.txt): $0.00 per 1,000, 30% complete
- [sthan.io, $4.50 monthly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/4-50-monthly/llms.txt): $0.045 per 1,000, 30% complete
- [sthan.io, $10 monthly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/10-monthly/llms.txt): $0.04 per 1,000, 30% complete
- [sthan.io, $18 monthly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/18-monthly/llms.txt): $0.036 per 1,000, 30% complete
- [sthan.io, $32 monthly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/32-monthly/llms.txt): $0.032 per 1,000, 30% complete
- [sthan.io, $58 monthly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/58-monthly/llms.txt): $0.029 per 1,000, 30% complete
- [sthan.io, $80 monthly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/80-monthly/llms.txt): $0.027 per 1,000, 30% complete
- [sthan.io, $120 monthly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/120-monthly/llms.txt): $0.024 per 1,000, 30% complete
- [sthan.io, $220 monthly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/220-monthly/llms.txt): $0.022 per 1,000, 30% complete
- [sthan.io, $310 monthly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/310-monthly/llms.txt): $0.021 per 1,000, 30% complete
- [sthan.io, $475 monthly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/475-monthly/llms.txt): $0.019 per 1,000, 30% complete
- [sthan.io, $900 monthly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/900-monthly/llms.txt): $0.018 per 1,000, 30% complete
- [sthan.io, $1,600 monthly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/1600-monthly/llms.txt): $0.016 per 1,000, 30% complete
- [sthan.io, $45.90 yearly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/45-90-yearly/llms.txt): $0.038 per 1,000, 30% complete
- [sthan.io, $96 yearly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/96-yearly/llms.txt): $0.032 per 1,000, 30% complete
- [sthan.io, $162 yearly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/162-yearly/llms.txt): $0.027 per 1,000, 30% complete
- [sthan.io, $307.20 yearly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/307-20-yearly/llms.txt): $0.026 per 1,000, 30% complete
- [sthan.io, $522 yearly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/522-yearly/llms.txt): $0.022 per 1,000, 30% complete
- [sthan.io, $672 yearly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/672-yearly/llms.txt): $0.019 per 1,000, 30% complete
- [sthan.io, $1,008 yearly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/1008-yearly/llms.txt): $0.017 per 1,000, 30% complete
- [sthan.io, $1,716 yearly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/1716-yearly/llms.txt): $0.014 per 1,000, 30% complete
- [sthan.io, $2,232 yearly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/2232-yearly/llms.txt): $0.012 per 1,000, 30% complete
- [sthan.io, $3,420 yearly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/3420-yearly/llms.txt): $0.011 per 1,000, 30% complete
- [sthan.io, $5,940 yearly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/5940-yearly/llms.txt): $0.0099 per 1,000, 30% complete
- [sthan.io, $9,600 yearly](https://datacircle.dev/ip-company-lookup-apis/sthan-io/9600-yearly/llms.txt): $0.008 per 1,000, 30% complete

## sthan.io's calls (1)

- `GET /IpGeolocation/{ip}`: [sthan.io, free](https://datacircle.dev/ip-company-lookup-apis/sthan-io/free/llms.txt)

## sthan.io's APIs (1)

- [sthan.io: IP company lookup API pricing, 25 plans](https://datacircle.dev/ip-company-lookup-apis/sthan-io/free/llms.txt)

## sthan.io: IP company lookup API alternatives

- [IPHunter, €9.99 monthly](https://datacircle.dev/ip-company-lookup-apis/iphunter/9-99-monthly/llms.txt): $0.0062 per 1,000, 40% complete
- [ipapi.is, $100 monthly, Large, GET /](https://datacircle.dev/ip-company-lookup-apis/ipapi-is/100-monthly-large-get/llms.txt): $0.0067 per 1,000, 80% complete
- [ProxyRadar, $24.99 monthly](https://datacircle.dev/ip-company-lookup-apis/proxyradar/24-99-monthly/llms.txt): $0.0083 per 1,000, 20% complete, 1 day
- [Geolocated.io, $99 monthly, Scale, GET /ip/{ip-address}](https://datacircle.dev/ip-company-lookup-apis/geolocated-io/99-monthly-scale-get-ip-ip-address/llms.txt): $0.0094 per 1,000, 40% complete, 1 day

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-07.

- https://api.sthan.io/llms-full.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://api.sthan.io/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://sthan.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://sthan.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://sthan.io/home/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing
- https://sthan.io/pricing/global?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=ip-company-lookup-api-pricing